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Estimating the asymptomatic proportion of coronavirus disease 2019 (COVID-19) cases on board the Diamond Princess cruise ship, Yokohama, Japan, 2020. | LitMetric

AI Article Synopsis

  • On February 5, 2020, a cruise ship in Yokohama, Japan, was quarantined for 2 weeks after a former passenger tested positive for COVID-19.
  • By February 20, a total of 634 passengers aboard had tested positive for the virus.
  • Statistical modeling estimated that 17.9% of infections were asymptomatic, with the majority occurring before the quarantine began.

Article Abstract

On 5 February 2020, in Yokohama, Japan, a cruise ship hosting 3,711 people underwent a 2-week quarantine after a former passenger was found with COVID-19 post-disembarking. As at 20 February, 634 persons on board tested positive for the causative virus. We conducted statistical modelling to derive the delay-adjusted asymptomatic proportion of infections, along with the infections' timeline. The estimated asymptomatic proportion was 17.9% (95% credible interval (CrI): 15.5-20.2%). Most infections occurred before the quarantine start.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7078829PMC
http://dx.doi.org/10.2807/1560-7917.ES.2020.25.10.2000180DOI Listing

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